I think SaikouDesign is Correct , you need some effects and animations like Hovers, Sliders , also the content seems too tight to each other may be you can try a 1040px or more , instead of 960px width..

Must make it responsive forsure to get any Consideration from TF(purely my opinion).

Your theme is nice , clean and visually attractive , bad luck that it got rejected, Any ways we cannot question the Authority of Envato staff and have to respect their decisions by all means.
Although your theme is very good and clean , but i still have some suggestions

Sugg 1: Shift your social links some where on the top of the template.